Why is it against the law for a man living in Delhi to be buried in Mumbai?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

How many squares, of any size, can you find on this chessboard which do not contain a Rook?

Why 1729 is a magic number? Answer Logically.

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

Two fathers and two sons decided to go to a shop and buy some sweets upon reaching. Each of them bought 1 kg of sweet. All of them returned home after some time and found out that they had 3kg of sweets with them.

They did not eat the sweets in the way, nor threw or lose anything. Then, how can this be possible?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

When you stop to look, you can always see me. But if you try to touch me, you can never feel me. Although you walk towards me, I remain the same distance from you. What am I?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?